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Permanent link (DOI): https://doi.org/10.7939/R3N87374G

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The root distribution, architecture, transpiration and root sapflow dynamics of mature trembling aspen (Populus tremuloides) growing along a hillslope Open Access

Descriptions

Other title
Subject/Keyword
Populus tremuloides
mature
Sapflow
root architecture
root sapflow
soil moisture
root distribution
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Snedden, Jessica E
Supervisor and department
Simon Landhausser (Renewable Resources)
Uldis Silins (Renewable Resources)
Examining committee member and department
Miles Dyck (Renewable Resources)
Uldis Silins (Renewable Resources)
Simon Landhausser (Renewable Resources)
Kevin Devito (Biological Sciences)
Department
Department of Renewable Resources
Specialization
Water and Land Resources
Date accepted
2013-09-26T11:24:57Z
Graduation date
2013-11
Degree
Master of Science
Degree level
Master's
Abstract
The objectives of this study were to explore comparative controls by atmospheric and belowground variables governing transpiration of trembling aspen (Populus tremuloides) growing along a water limited hillslope. Vertical and horizontal root distribution, intra- and inter-clonal root connections, soil moisture and transpiration and root water uptake dynamics of several aspen clones growing along a gradient of soil moisture availability were investigated. Fine root surface area was greatest at the lower portion of the hillslope and in the surface soil layers where soil moisture was greatest. Root water uptake capability was positively and strongly correlated with transpiration where trees at lower slope positions transpired twice the water per unit leaf area than trees in upper slope positions. The description of comparative atmospheric and belowground variables on water economy of trees is novel and provides significant insight into growth and water use strategies of trees growing in water limited environments.
Language
English
DOI
doi:10.7939/R3N87374G
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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